Emily Dickinson Lexicon

THIN'NESS, n.

1. The state of being thin; smallness of extent from one side or surface to the opposite; as, the thinness of ice; the thinness of a plate; the thinness of the skin.
2. Tenuity; rareness; as, the thinness of air or other fluid.
3. A state approaching to fluidity, or even fluidity; opposed to spissitude; as, the thinness of honey, of white wash, or of paint.
4. Exility; as, the thinness of a point.
5. Rareness; a scattered state; paucity; as, the thinness of trees in a forest; the thinness of inhabitants.